How Often Should Fuel Additive Be Added?
2 Answers
For naturally aspirated engines, adding one bottle every 5,000 kilometers is sufficient. For direct injection engines, it is recommended to add small doses continuously. Generally, fuel additives have a shelf life of 2 years and can be stored in a cool place for 2 years. However, if placed behind the rear window of the car and exposed to prolonged sunlight, they may deteriorate. If the fuel additive has not expired for long, it can still be used normally. But if it has expired for too long, even if used, it will not achieve the effect of cleaning carbon deposits. Here is some additional information about fuel additives: 1. Introduction: Fuel additive is a type of fuel cleaner. 2. Function: Fuel cleaners can reduce the formation of engine carbon deposits by minimizing impurities in the fuel.
As a veteran driver with decades of experience, mainly driving taxis in the city, I have some expertise in fuel system cleaning. It's recommended to add fuel system cleaner every 5,000 kilometers or roughly check it quarterly. This effectively removes carbon deposits, prevents injector clogging, ensures smoother engine operation, reduces vibration, and saves fuel. My routine is to pour the whole bottle into the tank before refueling, then fill up with gasoline to dilute and mix it evenly. A highway drive afterward helps it work better. If you often drive short distances or face heavy city traffic, adding it every 4,000 kilometers is safer. Consistent use can extend engine life—my old car has run 200,000 kilometers and still performs well. Don't overuse it; not only is it a waste of money, but it might backfire. Choosing reliable, well-known brands is the safest bet.
